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<br />. . <br />"i,l,dO:)~ <br />1!LW3~ <br /> <br />r- <br /> <br />---~ _..-~.__... <br /> <br />....... .---& <br />":.~ .....clO::;J ~ <br />:Clö3X~' <br />---~ ._....~- <br /> <br />~ <br /> <br />10..__ .......... <br /> <br />:AdO~; <br />~O~3X <br /> <br />. <br /> <br />'t: <br /> <br />by the said Inspector where the building sewer is exposed to <br /> <br /> <br />damage by tree roots. If installed in filled or unstable <br /> <br /> <br />ground, the building sewer shall be of cast iron soil pipe, <br /> <br /> <br />except that non-metallic material may be accepted if laid on <br /> <br /> <br />a suitable concrete bed or cradle as approved by the said <br /> <br /> <br />Inspector. <br /> <br /> <br />(g) The size and slope of the building sewers shall be <br /> <br />subject to the approval of the said Inspector, but in no event <br /> <br />shall the diame~er be less than six (6) inches. The slope of <br /> <br /> <br />such six (6) inch pipe shall not be less than one-eighth (1/8) <br /> <br /> <br />inch per foot. <br /> <br /> <br />(h) vfuenever possible the building sewer shall be brought <br /> <br /> <br />to the building at an elevation below the basement floor. No <br /> <br /> <br />building sewer shall be laid parallel to or within three feet of <br /> <br /> <br />any bearing wall, which might thereby be weakened. The depth <br /> <br /> <br />shall be sufficient to afford protection from frost. The build- <br /> <br /> <br />ing sewer shall be laid at a uniform grade and in straight <br /> <br /> <br />alignment in so far as possible. Changes in direction shall be <br /> <br /> <br />made only with properly curved pipes and fittings. <br /> <br /> <br />(i) In all buildings in which any building drain is too <br /> <br />low to permit gravity flow to the public sewer, sanitary sewage <br /> <br /> <br />carried by such drains shall be lifted by approved artificial <br /> <br /> <br />means and discharged to the building sewer. No water-operated <br /> <br /> <br />sewage ejector shall be used. <br /> <br /> <br />{j} All excavations required for the installation of a <br /> <br /> <br />building sewer shall be open trench work unless othefwise <br /> <br /> <br />approved by the said Inspector. Pipe laying and backfill shall <br /> <br /> <br />be performed in accordance with AS~1 specifications except that <br /> <br /> <br />no backfill shall be placed until the work has been inspected by <br /> <br /> <br />the Inspector or his representative. <br /> <br />.'r,~~'~"· <br />, :.';,', '~: <br />L:":I <br />_~__. 1", \-., <br /> <br />-----~.-_._._.._----. - - --_._._-------~ <br /> <br />.... , '.~ <br />·\J.dO:;¡Yl <br />tOèl3X <br />',-...".- <br /> <br />. :~ <br />i <br />! <br /> <br /> <br />~:. <br />'", <br /> <br /> <br />, .' <br />I <br /> <br />